Autotransformers

An autotransformer, also known as a step-down transformer, is an electrical transformer with only one winding. The winding has at least 3 taps where electrical connections are made. Autotransformers have the benefit of being small, light and cheap compared to dual-winding transformers.
Autotransformers are used to step up or step down voltages in the 110V-115V-120V range and 220V-230V-240V range. This allows electrical equipment from the US to be fed from higher European voltage.
Applications
• Can be used as a method of soft starting induction motors
• In UK railway applications
• In audio applications, tapped autotransformers are used to adapt speakers to constant-voltage distribution systems
• Power applications to interconnect systems operating at different voltages
• Special autotransformers are used on rural power distribution lines so that customers further away receive the same average voltage as ones nearer to the source

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Omschrijving Prijs Primary Voltage Rating Secondary Voltage Rating Power Rating Construction Mounting Type Core Type Termination Type Length Dimensions Width Depth Minimum Operating Frequency Maximum Operating Frequency Minimum Temperature
RS-stocknr. 436-8883
FabrikantnummerCM3000/A/US
€ 184,23
Each
Aantal stuks
230V 114.1V ac 3kVA - - Bobbin - 205mm 205 x 195 x 260mm 260mm 190mm - - -
RS-stocknr. 738-7871
FabrikantnummerAT3 15-20/21-4
FabrikantBlock
€ 573,49
Each
Aantal stuks
200 V ac, 208 V ac 400 V ac 15kVA Open Frame Chassis Mount, Floor Standing, Wall Mount 3 UI 180/78 Screw 410mm 410 x 170 x 380mm 170mm 380mm 50Hz 60Hz -
RS-stocknr. 738-7818
FabrikantnummerAT3 2-69-4
FabrikantBlock
€ 253,86
Each
Aantal stuks
690V ac 400 V ac 2kVA Open Frame Chassis Mount, Floor Standing, Wall Mount 3 UI 90/41,5 Screw 220mm 220 x 115 x 175mm 115mm 175mm 50Hz 60Hz -
RS-stocknr. 347-6668
FabrikantnummerCM2000/A/US
€ 155,27
Each
Aantal stuks
230V ac 115V ac 2kVA - - Bobbin - 205mm 205 x 195 x 260mm 260mm 190mm - - -
RS-stocknr. 293-2656
FabrikantnummerAIM 1.6/0.8
FabrikantBlock
€ 47,65
Each
Aantal stuks
115 V ac, 230 V ac 115 V ac, 220 V ac, 230 V ac, 240 V ac - Enclosed Panel Mount - Screw 166mm 166 x 77 x 76mm 77mm 76mm 50Hz 60Hz -20°C
RS-stocknr. 310-1162
FabrikantnummerSAT300
FabrikantBlock
€ 65,45
Each
Aantal stuks
230V ac 115 V ac 300VA - - - - 223mm 223 x 97 x 117mm 97mm 117mm - - -
RS-stocknr. 328-8051
FabrikantnummerSAT 500
FabrikantBlock
€ 101,92
Each
Aantal stuks
230V ac 115 V ac 500VA - - - - 223mm 223 x 97 x 117mm 97mm 117mm - - -
RS-stocknr. 293-2662
FabrikantnummerAIM 3.2/1.6
FabrikantBlock
€ 72,08
Each
Aantal stuks
115 V ac, 230 V ac 115 V ac, 220 V ac, 230 V ac, 240 V ac - Enclosed Panel Mount - Screw 223mm 223 x 97 x 117mm 97mm 117mm 50Hz 60Hz -20°C
RS-stocknr. 738-7846
FabrikantnummerAT3 10-20/21-4
FabrikantBlock
€ 742,27
Each
Aantal stuks
200 V ac, 208 V ac 400 V ac 10kVA Open Frame Chassis Mount, Floor Standing, Wall Mount 3 UI 150/77 Screw 350mm 350 x 192 x 280mm 192mm 280mm 50Hz 60Hz -
RS-stocknr. 504-206
FabrikantRS PRO
€ 183,70
Each
Aantal stuks
220 V ac, 230 V ac, 240 V ac 115V ac 1kVA Enclosed Chassis Mount, Floor Standing, Wall Mount - - 115mm 115 x 192 x 137mm 192mm 137mm 50Hz 60Hz -
RS-stocknr. 738-7890
FabrikantnummerAT3 25-20/21-4
FabrikantBlock
€ 1.144,70
Each
Aantal stuks
200 V ac, 208 V ac 400 V ac 25kVA Open Frame Chassis Mount, Floor Standing, Wall Mount 3 UI 210/88 Screw 480mm 480 x 220 x 440mm 220mm 440mm 50Hz 60Hz -
RS-stocknr. 738-7792
FabrikantnummerAT3 2-20/21-4
FabrikantBlock
€ 269,58
Each
Aantal stuks
200 V ac, 208 V ac 400 V ac 2kVA Open Frame Chassis Mount, Floor Standing, Wall Mount 3 UI 90/51,5 Screw 220mm 220 x 125 x 175mm 125mm 175mm 50Hz 60Hz -
RS-stocknr. 738-7830
FabrikantnummerAT3 3,5-48/50-4
FabrikantBlock
€ 232,54
Each
Aantal stuks
480 V ac, 500 V ac 400 V ac 3.5kVA Open Frame Chassis Mount, Floor Standing, Wall Mount 3 UI 90/41,5 Screw 220mm 220 x 115 x 175mm 115mm 175mm 50Hz 60Hz -
RS-stocknr. 738-7812
FabrikantnummerAT3 3,5-20/21-4
FabrikantBlock
€ 249,50
Each
Aantal stuks
200 V ac, 208 V ac 400 V ac 3.5kVA Open Frame Chassis Mount, Floor Standing, Wall Mount 3 UI 114/64 Screw 267mm 267 x 150 x 220mm 150mm 220mm 50Hz 60Hz -
RS-stocknr. 310-1156
FabrikantnummerSAT200
FabrikantBlock
€ 49,16
Each
Aantal stuks
230V ac 115 V ac 200VA - - - - 166mm 166 x 76 x 77mm 76mm 77mm - - -
RS-stocknr. 293-2678
FabrikantnummerAIM 5.0/2.5
FabrikantBlock
€ 85,11
Each
Aantal stuks
115 V ac, 230 V ac 115 V ac, 220 V ac, 230 V ac - Enclosed Panel Mount - Screw 223mm 223 x 97 x 117mm 97mm 117mm 50Hz 60Hz -20°C
RS-stocknr. 738-7880
FabrikantnummerAT3 15-44/46-4
FabrikantBlock
€ 283,97
Each
Aantal stuks
440 V ac, 460 V ac 400 V ac 15kVA Open Frame Chassis Mount, Floor Standing, Wall Mount 3 UI 114/64 Screw 267mm 267 x 150 x 215mm 150mm 215mm 50Hz 60Hz -
RS-stocknr. 504-199
FabrikantRS PRO
€ 85,72
Each
Aantal stuks
220 V ac, 230 V ac, 240 V ac 115V ac 250VA Enclosed Chassis Mount, Floor Standing, Wall Mount - - 81mm 81 x 136 x 100mm 136mm 100mm 50Hz 60Hz -
RS-stocknr. 504-195
FabrikantRS PRO
€ 119,47
Each
Aantal stuks
220 V ac, 230 V ac, 240 V ac 115V ac 500VA Enclosed Chassis Mount, Floor Standing, Wall Mount - - 98mm 98 x 145 x 118mm 145mm 118mm 50Hz 60Hz -
RS-stocknr. 310-1140
FabrikantnummerSAT100
FabrikantBlock
€ 48,78
Each
Aantal stuks
230V ac 115 V ac 100VA - - - - 166mm 166 x 76 x 77mm 76mm 77mm - - -
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